Audio listening system



FIG. 1 is a perspective view of an audio listening system in accordance with the present invention;

FIG. 2 is a rear view of an audio listening system in accordance with the present invention;

FIG. 3 is a front view of an audio listening system in accordance with the present invention;

FIG. 4 is a side perspective view of the earbud of an audio listening system in accordance with the present invention, shown separately for purposes of illustration;

FIG. 5 is an opposing side perspective view of the earbud of an audio listening system in accordance with the present invention;

FIG. 6 is a rear view of the earbud of an audio listening system in accordance with the present invention;

FIG. 7 is a front view of the earbud of an audio listening system in accordance with the present invention;

FIG. 8 is a side view of the earbud of an audio listening system in accordance with the present invention; and,

FIG. 9 is an opposing side view of the earbud of an audio listening system in accordance with the present invention.

The broken lines form no part of the claimed design. 

CLAIM The ornamental design for an audio listening system, as shown and described. 